I've been married for two and a half years, however our sex life is totally dead. We have never completely consummated our marriage. I don't feel aroused easily by my wife, and when I do, I get turned off easily. She's very unromantic, and very limited in what activities we do, and I keep getting frustrated. Whenever we attempt sex, we end up going through the same motions every time because she refuses to step out of her limited comfort zone. Our activities have gotten repetitive and progressively less arousing, which adds to my frustration. I want to know whether my lack of excitement is psychological or physical, and how to cure it.